@misc{hempel_temporal_variations_1996, 
author={Hempel, M., Wilken, R.-D., Schaule, G.},
title={Temporal variations of mercury and its organic mercury species at the sites of three former caustic soda plants},
year={1996},
howpublished = {conference lecture: Hamburg (D);},
note = {Hempel, M.; Wilken, R.; Schaule, G.: Temporal variations of mercury and its organic mercury species at the sites of three former caustic soda plants. In: Proceedings of the 4th International Conference on Mercury as a Global Pollutant. Hamburg (D). 1996. 148.}}